Sodium Isopropyl Xanthate

Q1: What are the basic specifications of Sodium Isopropyl Xanthate?

A:

• Chinese Name: Sodium Isopropyl Xanthate (abbreviated as SIPX), CAS No.:140-93-2, Molecular Formula: C4​H7​NaOS2​, Molecular Weight:160.21, EC No.:205-439-3.
• Appearance: Pale yellow to light green crystalline powder or extruded granules with a distinctive rotten sulfur odor. It is readily soluble in water and ethanol, prone to hydrolysis under high temperature and humid conditions, density approx.1.54 g/cm³.
• Commercial specifications: Active content ≥85% / 90%, available in powder and granular forms.

Q2: What are alternative names of this product?

A: Isopropyl Xanthate Sodium, O-Isopropyldithiocarbonate Sodium, short name SIPX; commonly called Isopropyl Xanthate in mineral processing industry.

Q3: What are the core applications of SIPX?

A:

1. Mineral flotation (main field): High-efficiency collector for copper, lead, zinc, gold and silver sulfide ores. It balances collecting power and flotation selectivity well, widely used for mixed polymetallic sulfide ore roughing and bulk flotation, ideal for moderate alkaline flotation pulp.
2. Hydrometallurgy: Heavy metal precipitant for removing impurities from electrolytic zinc, cobalt and nickel solution to refine finished metal purity.
3. Fine chemical raw material: Organic synthesis intermediate, auxiliary vulcanizing agent for rubber industry.

Q4: What advantages does SIPX have vs Sodium Ethyl Xanthate (SEX) and Sodium Butyl Xanthate?

A:

Compared with ethyl xanthate (SEX): SIPX has stronger collecting capacity, suitable for rough flotation to maximize metal recovery rate, while SEX is for selective cleaning flotation to raise concentrate grade.

Compared with butyl xanthate: SIPX features better hydrolysis stability and higher selectivity, lower reagent consumption; its collecting power is moderate between ethyl and butyl xanthate, the most cost-effective option for most mixed sulfide mines.

Q5: What are warehouse storage requirements for SIPX?

A:

1. Store in cool, dry and ventilated warehouse with ambient temperature below 30°C; strictly avoid sunlight exposure, rain and damp air, as moisture triggers hydrolysis, reduces effective content and releases harmful malodorous gas.
2. Isolate from strong acids, oxidizing agents, open flame and heat sources; never stock together with food, feed or daily chemicals; equip dry powder fire extinguishers inside storage area.
3. Unbroken sealed package shelf life is 6 months; finish consumption within 30 days once packaging is opened.

Q6: Classification for land and ocean transportation?

A: UN Code UN3342, Class 4.2 Self-heating Hazardous Goods, HS Code 2930902000. Export shipment requires MSDS and Dangerous Goods Packaging Certificate; only approved dangerous-goods trucks are allowed for delivery, mixing with general cargo is forbidden.

Q7: What is the typical flotation dosing dosage?

A: Dosage changes with raw ore mineral composition: Copper-lead-zinc mixed sulfide ore:70~180 g per ton raw ore; gold-bearing sulfide ore:40~100 g/t. It is recommended to conduct laboratory gradient dosing test first; better flotation performance when matched with pine oil frother.

Q8: Can dampened and caked SIPX still be used?

A: Slightly agglomerated product can be crushed and dissolved in clean water for normal dosing. Seriously water-soaked or sour-smelling deteriorated material cannot be used, its effective xanthate content is largely decomposed and flotation recovery will drop sharply.